O23.521

Billable

ChapterO00–O9A

Ranksubcategory

Official Description

Salpingo-oophoritis in pregnancy, first trimester

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

General instructions are available for the parent sections:

View CH15 Notes View O20-O29 Notes View O23 Notes View O23.52 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)

O20-O29Other maternal disorders predominantly related to pregnancy (O20-O29)

O23Infections of genitourinary tract in pregnancy

O23.5Infections of the genital tract in pregnancy

O23.52Salpingo-oophoritis in pregnancy

O23.521Salpingo-oophoritis in pregnancy, first trimester

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O23.521:

subcategoryO23.52

Salpingo-oophoritis in pregnancy

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categoryO23

Infections of genitourinary tract in pregnancy

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blockO20-O29

Other maternal disorders predominantly related to pregnancy (O20-O29)

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chapterCH15

Pregnancy, childbirth and the puerperium (O00-O9A)

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MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 817

Other Antepartum Diagnoses with O.R. Procedures with MCC

DRG 818

Other Antepartum Diagnoses with O.R. Procedures with CC

DRG 819

Other Antepartum Diagnoses with O.R. Procedures without CC/MCC

DRG 831

Other Antepartum Diagnoses without O.R. Procedures with MCC

DRG 832

Other Antepartum Diagnoses without O.R. Procedures with CC

DRG 833

Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

Cross Reference

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